Checklist for Installation and Commissioning of Evaporator

1. Check the unit must be bolted down with fastening bolts
2. Check the units must be installed with sufficient slope towards the drain of Condensation water
3. Ensure that Inert gas must be charged into the piping during brazing
4. Ensure that when connecting the drip tray to discharge line, the connection nut must be tightened by hands, do not use tools
5. Check the System piping must be in accordance with good refrigeration condition
6. Ensure that Piping distance between condensing unit and evaporator has to be minimum
7. Check the Fluid carrying pipelines must be protected against mechanical damage while mounting on cold room walls
8. Check piping insulation – repair / replace if required
9. Check that all system liquid line solenoid valves at fixtures are connected to the correct
10. Check Thermostatic Expansion -Valves including bulb location, bulbs positive contact with the suction line and that the bulb is properly insulated
11. Check that the location of Evaporator, air pattern must cover the entire room
12. Ensure that Never locate evaporators over doors
13. Check the finned surface area of coil should be clean
14. Check all strainers - replace / clean if required
15. Ensure that electrical wiring is in accordance with previously mentioned drawings or documentation and that all fan motor direction is correct
16. Make sure that the power supply must meet three phase voltages must be +/- 10% of nameplates ratings
17. Check / verify that all breakers and switches are in ON position during commissioning
18. Check / verify that all refrigeration loads are in refrigeration mode
19. Check all entire system fans for operation (Direction & function)
20. Check operation of all heaters (coil, pan, and drain lines)
21. Check all temperature probes at fixtures and confirm that they assigned to the correct
22. Ensure that all Evaporators are delivering correct superheat and that no flooding back occurs
23. Check Air Flow and Air Throw distance
24. Check that the condensate drains tubes are free of any obstruction and terminated at the appropriate point of discharge 

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Commissioning Checklist

1. Check all electrical and refrigerant connections
2. Check the room thermostat for normal operation and otherwise adjust
3. Make sure all Schrader valve caps are in place and tight
4. All fan motors on evaporators should be checked for proper rotation and fan motors mount should be carefully checked for tightness and proper alignment
5. Check the operation of compressor
6. Check liquid line, sight glass and expansion valve operation
7. Feeler bulbs must be in positive contact with the suction line and should be insulated
8. Thermostatic expansion valve must be checked for proper superheat settings of approx. 5-8 K
9. Ensure that the evaporator coil to achieve required cooling
10. Check drain pan for proper drainage
11. Check the defrost operation during unit running time

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